An-The team walk up to the penthouse to find a baby asleep on Tony's chest (OG avengers + Bucky)

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"Wow, the penthouse is a mess. Did anyone get an invite to one of his parties?" Bruce asked, stepping around a small pile of clothes near the elevator.

"No, Tony said he stopped having parties in the penthouse." Steve said, cringing at the pile of dishes in the sink.

"Maybe, but he would never let the penthouse get this messy unless he had a very big excuse," Clint said. Natasha made a small noise as she leaned over one of the couches, finding a very sleep ruffled and deprived Tony, with a sleeping baby on his chest, who was drooling on him, a curly mess of hair and in soft blue pyjamas.

"I think I found a big excuse." She said, waving the team over who surrounded the couch slowly.

"Who's baby did he steal?" Bucky asked, nearly cooing at the baby who was drolling on Tony's arc reactor through his shirt.

"Not stolen. He looks like baby Tony in those photos we found in his lab." Bruce said. Natasha hummed, eyeing the blanket sprawled over Tony's lower body, his arms wrapped around the baby tightly.

"He looks stressed out of his mind." She said quietly, brushing Tony's hair out of his face and running her fingers through it.

"We could help out a little. You know, put his clothes in the laundry shoot, do the dishes, go grocery shopping, vacuum and mop." Steve offered, pulling the blanket up so it was covering Tony's chest and the babies back.

"Fine idea Stevie. I call the dishes." Bucky said, patting Steve's shoulders and already walking off.

Almost an hour later the team had managed to clean the entire penthouse, Natasha even folding the stack of brand new baby clothes with their tags still on, packing them neatly into the very very new and neat nursery. It was the only room in the penthouse Tony had managed to keep clean. The penthouse was as clean as if it hadn't been messy at all, and the team were sitting around the living room watching Tony and the baby sleep.

"If he's still sleeping through that noise he must be struggling," Bruce said quietly. As if he'd flipped a twitch Tony started shifting, the blanket falling to the floor as he sat up, still holding the baby tightly to his chest who was blinking blearily and making small noises.

"Shh, shh, you're okay. Just gettin' up. Nap times over." He cooed at the baby who calmed down quickly and babbled up at Tony who smiled wide at him.

"Oh, you're making me soft Pete. I'm gonna be that dad aren't I?" Tony asked the baby who let out a quiet giggle, making Tony coo again. They watched with a soft smile as Tony slowly stood up, shifting Peter so he was in Tony's arms. Tony narrowed his eyes at the now clean coffee table, slowly looking up and finding the team sitting and watching him.

"Ooooh, noodles, I forgot I told you guys to come up today," Tony said tiredly. Natasha smiled easily.

"Noodles?" She asked. Tony rolled his eyes and picked up the blanket.

"I'm trying to stop swearing. Look at this little man? Could you ever imagine him swearing?" Tony asked, ducking his head to Peter, who was poking at the humming arc reactor through his shirt.

"You just don't want Pepper to kill you for making a baby swear." Bruce deadpanned. Tony nodded his head.

"That too." He said seriously. The room was silent for several minutes save for Peter's small noises and quiet babbling.

"He's gonna be a talker," Bucky said solemnly. Tony snorted and poked Peter's nose, making him wrap his tiny fingers around Tony's finger.

"You gonna introduce us?" Steve teased. Tony nodded slowly, sitting back down.

"His name is Peter Benjamin-Edward Parker-Stark," Tony said, turning Peter around in his lap so he was sitting. Peter was still for a moment before his face broke into a wide smile, giggling loudly and swinging his legs.

"He's got the Tony Stark charm," Natasha said seriously, before smiling at Peter who looked extremely happy to be getting attention.

"Hmm, most of it. I think that's just Peter charm." Tony said, kissing Peter's head where there was an impressive amount of curly hair on his head.

"Who's the mother?" Bucky asked. Tony sighed, glad Thor wasn't here, Peter had already freaked out when FRIDAY spoke overhead.

"Lady I worked with a year ago when I set up the genetic research facility. It was innocent, we went out for drinks in celebration. I actually really liked her and I was going to ask her on a real date, no sleeping with her or anything. But we got drunk, she didn't tell me she was married and dropped off of the face of the Earth." Tony swallowed, holding Peter tightly who was still babbling and giggling loudly.

"Nine months later there were reports everywhere about her and her husband being killed in a car crash and her mystery child who was being taken into CPS custody until they could find the biological father. I got my whole legal team in, Pepper, Rhodey, everyone. We did a DNA test and it was a match. So I have custody, and he was nameless so we had to figure out a name for him. I decided to contact his living relatives, who come over regularly and visit Peter, if they wanted input." Tony explained, smiling fondly at Peter who was looking up at him.

"Peter is his grandfather on his mother's side, Benjamin his uncle who died a few months before he was born in a shooting, Edward for JARVIS, and we hyphenated his mothers and my last names." Tony finished, shrugging his shoulders. The team were silent for several minutes, watching Tony interacting Peter with fondness and gentleness they'd never seen.

"You really love him don't you?" Clint asked. Tony hummed.

"Yes. A little ball of sunshine and he makes everything easy. Eats what I give him, lets me put him in the clothes I want, sleeps through the night, giggles when he gets his baths, always wants me to play with him though. I don't think I've been in the lab more than six hours a day." Tony said, with voice clogged with happiness, tears gathering in his eyes.

"How much sleep have you been getting?" Bruce asked suspiciously. Tony sniffled.

"Not much." He said weakly. Natasha smiled, standing up and planting herself in front of Tony and Peter.

"Well, I set out some clothes for you on your bed, which has new sheets on it. Everyone helped clean the penthouse." Natasha said. Tony let a few overwhelmed tears slip out of his eyes.

"You didn't have to do that." He said quietly, sniffling again. Natasha waved her hand.

"This is hard for you too. Just let yourself take at least an hour. Take a shower, shave your face, put some new clothes on. We'll take care of Peter." Natasha said, making grabby hands for Peter who was babbling up at her. Tony sighed, gently handing Peter off into Natasha's arms and standing up. He brushed Peter's hair out of his face, kissing his forehead a few times and then walking off without any complaint from Peter.

"Look at you. You're such a cute little man." Natasha cooed, rubbing her nose against Peter who was kicking his legs in excitement, scrunching his fingers.

"So chubby." Bucky cooed, standing up from his seat and holding one of Peter's hands in his own, letting Petet hold tightly to his fingers. The team were slightly off-put by Bucky's outright adoration of Peter.

"Look at those eyes," Bruce said, also standing up and poking at Peter's cheek who took the attention happily. Peter had brown and green eyes, swirled together.

"I feel like Tony's not gonna get his baby back." Clint teased, also standing up. Steve hummed, joining Bucky in holding Peter's other hand.

"Imagine the field day reporters would have. Tony Stark's secret baby kidnapped by teammates." He said in amusement. Peter turned his head to Steve, pulling his hands out of Steve's and Bucky's, making grabby hands up at Steve who paled.

"I've never held a baby before." He said quietly. Natasha grinned wickedly, moving Steve's hands and slowly and gently handing Peter to him, supporting his head and back, sitting down slowly.

"This is adorable." She said firmly, swiftly pulling out her phone and snapping a photo of Steve and Peter.

"No, he's adorable." Steve countered.

"No fights there."